Question by lambertofn · Mar 02, 2019 at 01:18 AM · c#trigger destroy

Problem in Destroy GameObject on OnTriggerEnter2D

I just learning from this tutorial Unity Tutorial - Make 2D Flappy Bird

What I want : Destroying "trash" object when "swimmer" trigger it.

Error : The object of type 'GameObject' has been destroyed but you are still trying to access it. Your script should either check if it is null or you should not destroy the object. TrashPool.Update ().

What I have done :

Trash.cs

     private void OnTriggerEnter2D (Collider2D other){
         if (other.GetComponent<Swimmer> () != null) {
             GameControl.instance.SwimmerScored ();
                     Destroy (gameObject);
         }
     }

TrashPool.cs

 void Update() {
             timeSinceLastSpawned += Time.deltaTime;
     
             if (GameControl.instance.gameOver == false && timeSinceLastSpawned >= spawnRate) 
             {   
                 timeSinceLastSpawned = 0f;
     
                 //Set a random y position for the column
                 float spawnYPosition = Random.Range(columnMin, columnMax);
     
                 //...then set the current column to that position.
                 columns[currentColumn].transform.position = new Vector2(spawnXPosition, spawnYPosition);
     
                 //Increase the value of currentColumn. If the new size is too big, set it back to zero
                 currentColumn ++;
     
                 if (currentColumn >= columnPoolSize) 
                 {
                     currentColumn = 0;
                 }
             }
         }

I hope someone can help me to resolve this problem, Thank you.

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